> From: VDR User <user....@gmail.com> > Subject: Re: [vdr] PVRINPUT plugin and "black/cinema bars"
> > I am pretty sure that your TV station broadcasts analogue TV not > > anamorphic, which means it "delivers" the black bars to prevent the > > aspect ?ratio of a 16:9 content. > > The 'black bars' are called letterboxing. It's used to _preserve_ the > aspect ratio of widescreen content on 4:3 displays, not prevent it as > you've suggested. I meant that. Sorry for the mistake, english is not my native language. > > > Unfortunately there is no way to detect the incoming signal (Tuner or > > extern). Therefore it is not possible to automatically choose the right > > setting. > > Sure there is, just look in the mpeg headers. If for some reason that > flag isn't set correctly, you can also use the resolution along with > some simple math to calculate the aspect ratio. The mpeg is not delivered by the broadcaster, it is generated by the encoder. The content of the header is a result of the V4L2_CID_MPEG_VIDEO_ASPECT setting done by the application. > > >> Any ideas how to remove these? > > > > The driver does not support clipping/cropping. We will always encode the > > whole capture size. If there is already a bar, it will also be in the > > encoded stream. You could try to use the zoom mode of your TV. > > You _could_ write some functions to detect and remove letterboxing, > though I don't know anyone motivated enough to actually do it. The main goal of the pvrinput-plugin is to use the hardware encoder.I think it is a bad idea to do software-based on-the-fly-recoding. Simon, which output device do you use? Maybe the xine- or xineliboutput-Plugin can do the needed zoom for you. (?) Greets, Martin _______________________________________________ vdr mailing list email@example.com http://www.linuxtv.org/cgi-bin/mailman/listinfo/vdr